Leukopenia is a general term for having too few white blood cells, covering all five main types: neutrophils, lymphocytes, ...

A blood test measuring levels of basophil activation markers identifies sesame seed allergy more accurately than skin prick ...

Experts think certain non-routine tests are worth asking your doctor about, since the results could point to health-saving ...

Your anion gap is more than just a lab number—it’s a window into your body’s acid–base balance and overall metabolic health. Understanding how it’s calculated, what’s normal for your lab, and how to ...